第17题: [单项选择]Who’s going to be in charge of the party A. Alice B. Mary C. Jane 参考答案:A 答案解析:[解析] M: Alice, do you know who’s going to be in charge of the party, Mary or Jane F: Neither
第21题: [单项选择]Fest-food restaurants are ______ to those who are too busy or too tired to cook dinner for the family. A. great helps B. a great help C. great help D. of a great help 参考答案:B 答案解析:该题考察抽象名词具体化,此处a help指一件有帮助的东西或事情。